Timo Walther created FLINK-24427:
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Summary: Hide Scala in flink-table-planner from API
Key: FLINK-24427
URL: https://issues.apache.org/jira/browse/FLINK-24427
Project: Flink
Issue Type: Sub-task
Components: API / Scala, Table SQL / API, Table SQL / Planner
Reporter: Timo Walther
FLIP-32 has decoupled the planner from the API. However, the planner code base
is still the largest Scala code base we have in Flink that we cannot port to
Java easily.
In order to allow arbitrary Scala versions in the user API, we suggest to hide
the Scala version of the planner from the Scala version of the API. The API is
mostly developed in Java and contains only a couple of classes implemented in
Scala. Those should be easier to maintain for various Scala versions. The
planner is already discovered via Java SPI.
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